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colleagues, critical, dreaded, drill, involving, lab, potential, research, stem, vital

To Avoid Root Canals, Teeth That Replace Themselves

Stem-Cell Research Makes Progress in Quest to Avoid the Dreaded Drill

source: 華爾街日報

Could the days of the root canal, for decades the symbol of the most excruciating kind of minor surgery, finally be numbered?

Scientists have made advances in treating tooth decay that they hope will let them restore tooth tissueand avoid the painful dental procedure. Several recent studies have demonstrated in animals that procedures involving tooth stem cells appear to regrow the critical, living tooth tissue known as pulp.

Treatments that prompt the body to regrow its own tissues and organs are known broadly as regenerative medicine. There is significant interest in figuring out how to implement this knowledge to help the many people with cavities and disease that lead to tooth loss.

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 critical第四級[形容詞] 緊要的,關鍵性的,危急的
 decades第三級decade(十;十年) 的複數
 demonstrated第四級demonstrate(示範操作(產品),展示) 的過去式及過去分詞
 disease第三級[名詞] 病,疾病
 dreaded第四級dread(懼怕;擔心) 的過去式及過去分詞
 drill第四級[動詞] 鑽(孔);在...上鑽孔; [名詞] 鑽,鑽頭;鑽床
 involving第四級involve(使捲入,連累;牽涉) 的現在分詞
 lead第四級[動詞] 引導; [名詞] 指導;領先地位;線索,鉛筆心
 minor第三級[形容詞] 較小的;較次要的; [動詞] 副修,兼修; [名詞] 未成年者;副科
 procedure第四級[名詞] 程序;手續;步驟
 procedures第四級procedure(程序;手續;步驟) 的複數
 prompt第四級[形容詞] 敏捷的;即時的,即期的; [動詞] 提示; [名詞] 催促;提醒
 replace第三級[動詞] 取代;以...代替
 research第四級[動詞] 調查,探究; [名詞] (學術)研究;調查,探究
 restore第四級[動詞] 恢復
 significant第三級[形容詞] 有意義的
 stem第四級[動詞] 起源於,由...而造成; [名詞] 莖,(樹)幹,(葉)柄
 surgery第四級[名詞] (外科)手術
 tissue第三級[名詞] 紙巾;面紙;(動植物的)組織[
 tissues第三級tissue(紙巾;面紙;(動植物的)組織[) 的複數